1 Abstract
10 SD780 Series Servo Technical Manual
1.4 System Diagram
Over-temperature/current
protection
Dynamic
brake circuit
M
L1
L2
L3
Main
circuit
power
Rheost
at
Cha
rge
B1/
⊕
2
B2
B3
Voltage
sampling
Delay Drive
Temperature
sampling
Gate
drive
Current
sampling
Control
power
Rheostat
L1C
L2C
Control
power
ARM+FPGA
CN7
CN6
MicroUSB
Dual RJ45 bus interface
Full-closed loop and 2500 line interface
I/O
A/D
CN5
Input and
output signals
Command
voltage input
Encoder divider
pulse output
Command pulse
input
U
V
W
CN1
CN2
Servo motor
ENC
Fan
Bus encoder
interface
Panel operator